Earnings per share - Computation of basic and diluted earnings per share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Numerator:
Net income attributable to common shareholders, basic	$ 650,827	$ 387,854
Net income attributable to common shareholders, diluted	$ 650,827	$ 387,854
Denominator:
Basic - weighted average common shares (in shares)	128,472,550	128,425,002
Increase in weighted average common shares from dilutive effect of equity-based awards (in shares)	1,890,891	1,517,406
Diluted - weighted average common shares, assuming exercise of equity-based awards (in shares)	130,363,441	129,942,408
Basic earnings per share (in USD per share)	$ 5.07	$ 3.02
Diluted earnings per share (in USD per share)	$ 4.99	$ 2.98